1 // ============================================================================
2 // Rocks'n'Diamonds - McDuffin Strikes Back!
3 // ----------------------------------------------------------------------------
4 // (c) 1995-2014 by Artsoft Entertainment
7 // http://www.artsoft.org/
8 // ----------------------------------------------------------------------------
10 // ============================================================================
15 #include "libgame/libgame.h"
27 struct NetworkClientPlayerInfo
30 char name[MAX_PLAYER_NAME_LEN + 1];
31 struct NetworkClientPlayerInfo *next;
34 static struct NetworkClientPlayerInfo first_player =
43 static TCPsocket sfd; /* TCP server socket */
44 static UDPsocket udp; /* UDP server socket */
45 static SDLNet_SocketSet rfds; /* socket set */
47 static struct NetworkBuffer *read_buffer = NULL;
48 static struct NetworkBuffer *write_buffer = NULL;
50 static boolean stop_network_game = FALSE;
51 static boolean stop_network_client = FALSE;
52 static char stop_network_client_message[MAX_OUTPUT_LINESIZE + 1];
54 static struct NetworkLevelInfo network_level;
56 static void DrawNetworkTextExt(char *message, int font_nr, boolean initialize)
58 static int xpos = 0, ypos = 0;
59 static int max_line_width = 0;
60 int font_width = getFontWidth(font_nr);
61 int font_height = getFontHeight(font_nr);
67 if (game_status == GAME_MODE_LOADING)
69 max_line_width = WIN_XSIZE;
71 xpos = (max_line_width - getTextWidth(message, font_nr)) / 2;
74 DrawText(xpos, ypos, message, font_nr);
81 max_line_width = SXSIZE;
83 DrawTextSCentered(ypos_1, font_nr, message);
85 /* calculate offset to x position caused by rounding */
86 int max_chars_per_line = max_line_width / font_width;
87 int xoffset = (max_line_width - max_chars_per_line * font_width) / 2;
93 Error(ERR_DEBUG, "========== %s ==========", message);
97 int max_chars_per_line = max_line_width / font_width;
98 int max_lines_per_text = 10;
99 int num_lines_spacing = (font_nr == FC_YELLOW ? 1 : 3);
100 int num_lines_printed = DrawTextBuffer(xpos, ypos, message, font_nr,
101 max_chars_per_line, -1,
102 max_lines_per_text, 0, -1,
105 ypos += (num_lines_printed + num_lines_spacing) * font_height;
107 Error(ERR_DEBUG, "%s", message);
113 static void DrawNetworkText(char *message)
115 DrawNetworkTextExt(message, FC_YELLOW, FALSE);
118 static void DrawNetworkText_Success(char *message)
120 DrawNetworkTextExt(message, FC_GREEN, FALSE);
123 static void DrawNetworkText_Failed(char *message)
125 DrawNetworkTextExt(message, FC_RED, FALSE);
128 static void DrawNetworkText_Title(char *message)
130 DrawNetworkTextExt(message, FC_GREEN, TRUE);
133 static void SendNetworkBufferToServer(struct NetworkBuffer *nb)
135 if (!network.enabled)
138 /* set message length header */
139 putNetwork32BitInteger(nb->buffer, nb->size - 4);
141 /* directly send the buffer to the network server */
142 SDLNet_TCP_Send(sfd, nb->buffer, nb->size);
145 static struct NetworkClientPlayerInfo *getNetworkPlayer(int player_nr)
147 struct NetworkClientPlayerInfo *player = NULL;
149 for (player = &first_player; player; player = player->next)
150 if (player->nr == player_nr)
153 if (player == NULL) /* should not happen */
154 Error(ERR_EXIT, "protocol error: reference to non-existing player %d",
160 char *getNetworkPlayerName(int player_nr)
162 struct NetworkClientPlayerInfo *player;
165 return("the network game server");
166 else if (player_nr == first_player.nr)
169 for (player = &first_player; player; player = player->next)
170 if (player->nr == player_nr && strlen(player->name) > 0)
171 return(player->name);
173 return(EMPTY_PLAYER_NAME);
176 static boolean hasPathSeparator(char *s)
178 return (strchr(s, '/') != NULL);
181 static void StartNetworkServer(int port)
186 #if defined(TARGET_SDL2)
187 server_thread = SDL_CreateThread(NetworkServerThread,
188 "NetworkServerThread", &p);
190 server_thread = SDL_CreateThread(NetworkServerThread, &p);
192 network_server = TRUE;
195 boolean ConnectToServer(char *hostname, int port)
201 if (read_buffer == NULL)
202 read_buffer = newNetworkBuffer();
204 if (write_buffer == NULL)
205 write_buffer = newNetworkBuffer();
207 DrawNetworkText_Title("Initializing Network");
210 port = DEFAULT_SERVER_PORT;
212 if (hostname == NULL)
214 // if no hostname given, try to auto-detect network server in local network
215 // by doing a UDP broadcast on the network server port and wait for answer
217 SDLNet_SocketSet udp_socket_set = SDLNet_AllocSocketSet(1);
219 Error(ERR_EXIT, "SDLNet_AllocSocketSet() failed: %s"), SDLNet_GetError();
221 udp = SDLNet_UDP_Open(0);
223 Error(ERR_EXIT, "SDLNet_UDP_Open() failed: %s", SDLNet_GetError());
225 if (SDLNet_UDP_AddSocket(udp_socket_set, udp) == -1)
226 Error(ERR_EXIT_NETWORK_SERVER, "SDLNet_TCP_AddSocket() failed: %s"),
229 char *data_ptr = "network server UDB broadcast";
230 int data_len = strlen(data_ptr) + 1;
231 IPaddress ip_address;
233 SDLNet_Write32(0xffffffff, &ip_address.host); /* 255.255.255.255 */
234 SDLNet_Write16(port, &ip_address.port);
246 SDLNet_UDP_Send(udp, -1, &packet);
248 DrawNetworkText("Looking for nearby network server ...");
250 /* wait for any nearby network server to answer UDP broadcast */
251 for (i = 0; i < 5; i++)
253 if (SDLNet_CheckSockets(udp_socket_set, 0) == 1)
255 int num_packets = SDLNet_UDP_Recv(udp, &packet);
257 if (num_packets == 1)
261 server_host = SDLNet_Read32(&packet.address.host);
263 sprintf(message, "Network server found at %d.%d.%d.%d!",
264 (server_host >> 24) & 0xff,
265 (server_host >> 16) & 0xff,
266 (server_host >> 8) & 0xff,
267 (server_host >> 0) & 0xff);
269 DrawNetworkText_Success(message);
273 DrawNetworkText_Failed("No answer from network server!");
280 Delay_WithScreenUpdates(100);
284 if (server_host == 0)
285 DrawNetworkText_Failed("No nearby network server found!");
288 rfds = SDLNet_AllocSocketSet(1);
294 SDLNet_ResolveHost(&ip, hostname, port);
296 if (ip.host == INADDR_NONE)
298 sprintf(message, "Failed to resolve network server hostname '%s'!",
301 DrawNetworkText_Failed(message);
307 server_host = SDLNet_Read32(&ip.host);
310 sprintf(message, "Connecting to network server host %s ...", hostname);
312 DrawNetworkText(message);
316 // if no hostname was given and no network server was auto-detected in the
317 // local network, try to connect to a network server at the local host
318 if (server_host == 0)
320 server_host = 0x7f000001; /* 127.0.0.1 */
322 DrawNetworkText("Looking for local network server ...");
326 DrawNetworkText("Connecting to network server ...");
329 SDLNet_Write32(server_host, &ip.host);
330 SDLNet_Write16(port, &ip.port);
333 Error(ERR_DEBUG, "trying to connect to network server at %d.%d.%d.%d ...",
334 (server_host >> 24) & 0xff,
335 (server_host >> 16) & 0xff,
336 (server_host >> 8) & 0xff,
337 (server_host >> 0) & 0xff);
339 sfd = SDLNet_TCP_Open(&ip);
343 SDLNet_TCP_AddSocket(rfds, sfd);
345 DrawNetworkText_Success("Successfully connected!");
352 DrawNetworkText_Failed("Failed to connect to network server!");
354 DrawNetworkText_Failed("No local network server found!");
356 printf("SDLNet_TCP_Open(): %s\n", SDLNet_GetError());
359 if (hostname) /* connect to specified server failed */
362 DrawNetworkText("Starting new local network server ...");
364 StartNetworkServer(port);
366 /* wait for server to start up and try connecting several times */
367 for (i = 0; i < 30; i++)
369 if ((sfd = SDLNet_TCP_Open(&ip))) /* connected */
371 DrawNetworkText_Success("Successfully connected to newly started network server!");
373 SDLNet_TCP_AddSocket(rfds, sfd);
378 Delay_WithScreenUpdates(100);
381 DrawNetworkText_Failed("Failed to connect to newly started network server!");
383 /* when reaching this point, connect to newly started server has failed */
387 void SendToServer_PlayerName(char *player_name)
389 initNetworkBufferForWriting(write_buffer, OP_PLAYER_NAME, 0);
391 putNetworkBufferString(write_buffer, player_name);
393 SendNetworkBufferToServer(write_buffer);
395 Error(ERR_NETWORK_CLIENT, "you set your player name to \"%s\"", player_name);
398 void SendToServer_ProtocolVersion(void)
400 initNetworkBufferForWriting(write_buffer, OP_PROTOCOL_VERSION, 0);
402 putNetworkBuffer8BitInteger(write_buffer, PROTOCOL_VERSION_MAJOR);
403 putNetworkBuffer8BitInteger(write_buffer, PROTOCOL_VERSION_MINOR);
404 putNetworkBuffer8BitInteger(write_buffer, PROTOCOL_VERSION_PATCH);
406 SendNetworkBufferToServer(write_buffer);
409 void SendToServer_NrWanted(int nr_wanted)
411 initNetworkBufferForWriting(write_buffer, OP_NUMBER_WANTED, 0);
413 putNetworkBuffer8BitInteger(write_buffer, nr_wanted);
415 SendNetworkBufferToServer(write_buffer);
418 void SendToServer_LevelFile(void)
420 initNetworkBufferForWriting(write_buffer, OP_LEVEL_FILE, 0);
422 putNetworkBufferString( write_buffer, leveldir_current->identifier);
423 putNetworkBuffer16BitInteger(write_buffer, level.file_info.nr);
424 putNetworkBuffer8BitInteger( write_buffer, level.file_info.type);
425 putNetworkBuffer8BitInteger( write_buffer, level.file_info.packed);
426 putNetworkBufferString( write_buffer, level.file_info.basename);
427 putNetworkBufferFile( write_buffer, level.file_info.filename);
428 putNetworkBuffer8BitInteger( write_buffer, level.use_custom_template);
430 if (level.use_custom_template)
432 putNetworkBufferString(write_buffer, level_template.file_info.basename);
433 putNetworkBufferFile( write_buffer, level_template.file_info.filename);
436 SendNetworkBufferToServer(write_buffer);
438 setString(&network_level.leveldir_identifier, leveldir_current->identifier);
440 /* the sending client does not use network level files (but the real ones) */
441 network_level.use_network_level_files = FALSE;
444 printf("::: '%s'\n", leveldir_current->identifier);
445 printf("::: '%d'\n", level.file_info.nr);
446 printf("::: '%d'\n", level.file_info.type);
447 printf("::: '%d'\n", level.file_info.packed);
448 printf("::: '%s'\n", level.file_info.basename);
449 printf("::: '%s'\n", level.file_info.filename);
451 if (level.use_custom_template)
452 printf("::: '%s'\n", level_template.file_info.filename);
456 void SendToServer_StartPlaying(void)
458 unsigned int new_random_seed = InitRND(level.random_seed);
460 initNetworkBufferForWriting(write_buffer, OP_START_PLAYING, 0);
462 putNetworkBufferString( write_buffer, leveldir_current->identifier);
463 putNetworkBuffer16BitInteger(write_buffer, level_nr);
464 putNetworkBuffer32BitInteger(write_buffer, new_random_seed);
466 SendNetworkBufferToServer(write_buffer);
469 void SendToServer_PausePlaying(void)
471 initNetworkBufferForWriting(write_buffer, OP_PAUSE_PLAYING, 0);
473 SendNetworkBufferToServer(write_buffer);
476 void SendToServer_ContinuePlaying(void)
478 initNetworkBufferForWriting(write_buffer, OP_CONTINUE_PLAYING, 0);
480 SendNetworkBufferToServer(write_buffer);
483 void SendToServer_StopPlaying(int cause_for_stopping)
485 initNetworkBufferForWriting(write_buffer, OP_STOP_PLAYING, 0);
487 putNetworkBuffer8BitInteger(write_buffer, cause_for_stopping);
489 SendNetworkBufferToServer(write_buffer);
492 void SendToServer_MovePlayer(byte player_action)
494 initNetworkBufferForWriting(write_buffer, OP_MOVE_PLAYER, 0);
496 putNetworkBuffer8BitInteger(write_buffer, player_action);
498 SendNetworkBufferToServer(write_buffer);
501 static void Handle_OP_BAD_PROTOCOL_VERSION(void)
503 int protocol_version_major = getNetworkBuffer8BitInteger(read_buffer);
504 int protocol_version_minor = getNetworkBuffer8BitInteger(read_buffer);
506 Error(ERR_WARN, "protocol version mismatch");
507 Error(ERR_WARN, "server expects %d.%d.x instead of %d.%d.%d",
508 protocol_version_major,
509 protocol_version_minor,
510 PROTOCOL_VERSION_MAJOR,
511 PROTOCOL_VERSION_MINOR,
512 PROTOCOL_VERSION_PATCH);
514 sprintf(stop_network_client_message, "Network protocol version mismatch! Server expects version %d.%d.x instead of %d.%d.%d!",
515 protocol_version_major,
516 protocol_version_minor,
517 PROTOCOL_VERSION_MAJOR,
518 PROTOCOL_VERSION_MINOR,
519 PROTOCOL_VERSION_PATCH);
521 stop_network_client = TRUE;
524 static void Handle_OP_YOUR_NUMBER(void)
526 int old_client_nr = getNetworkBuffer8BitInteger(read_buffer);
527 int new_client_nr = getNetworkBuffer8BitInteger(read_buffer);
528 int new_index_nr = new_client_nr - 1;
529 struct PlayerInfo *old_local_player = local_player;
530 struct PlayerInfo *new_local_player = &stored_player[new_index_nr];
532 printf("OP_YOUR_NUMBER: %d\n", old_client_nr);
533 first_player.nr = new_client_nr;
535 if (old_local_player != new_local_player)
537 /* set relevant player settings and change to new player */
539 local_player = new_local_player;
541 old_local_player->connected_locally = FALSE;
542 new_local_player->connected_locally = TRUE;
544 old_local_player->connected_network = FALSE;
545 new_local_player->connected_network = TRUE;
548 if (first_player.nr > MAX_PLAYERS)
549 Error(ERR_EXIT, "sorry, more than %d players not allowed", MAX_PLAYERS);
551 Error(ERR_NETWORK_CLIENT, "you get client # %d", new_client_nr);
553 stored_player[new_index_nr].connected_network = TRUE;
556 static void Handle_OP_NUMBER_WANTED(void)
558 int old_client_nr = getNetworkBuffer8BitInteger(read_buffer);
559 int client_nr_wanted = getNetworkBuffer8BitInteger(read_buffer);
560 int new_client_nr = getNetworkBuffer8BitInteger(read_buffer);
561 int old_index_nr = old_client_nr - 1;
562 int new_index_nr = new_client_nr - 1;
563 int index_nr_wanted = client_nr_wanted - 1;
564 struct PlayerInfo *old_player = &stored_player[old_index_nr];
565 struct PlayerInfo *new_player = &stored_player[new_index_nr];
567 printf("OP_NUMBER_WANTED: %d\n", old_client_nr);
569 if (new_client_nr == client_nr_wanted) /* switching succeeded */
571 struct NetworkClientPlayerInfo *player;
573 if (old_client_nr != client_nr_wanted) /* client's nr has changed */
574 Error(ERR_NETWORK_CLIENT, "client %d switches to # %d",
575 old_client_nr, new_client_nr);
576 else if (old_client_nr == first_player.nr) /* local player keeps his nr */
577 Error(ERR_NETWORK_CLIENT, "keeping client # %d", new_client_nr);
579 if (old_client_nr != new_client_nr)
581 /* set relevant player settings and change to new player */
583 old_player->connected_network = FALSE;
584 new_player->connected_network = TRUE;
587 player = getNetworkPlayer(old_client_nr);
588 player->nr = new_client_nr;
590 if (old_player == local_player) /* local player switched */
592 local_player = new_player;
594 old_player->connected_locally = FALSE;
595 new_player->connected_locally = TRUE;
598 else if (old_client_nr == first_player.nr) /* failed -- local player? */
602 sprintf(request, "Sorry! Player %d already exists! You are player %d!",
603 index_nr_wanted + 1, new_index_nr + 1);
605 Request(request, REQ_CONFIRM);
607 Error(ERR_NETWORK_CLIENT, "cannot switch -- you keep client # %d",
611 if (game_status == GAME_MODE_MAIN)
612 DrawNetworkPlayers();
615 static void Handle_OP_PLAYER_NAME(void)
617 int player_nr = getNetworkBuffer8BitInteger(read_buffer);
618 char *player_name = getNetworkBufferString(read_buffer);
619 struct NetworkClientPlayerInfo *player = getNetworkPlayer(player_nr);
621 printf("OP_PLAYER_NAME: %d\n", player_nr);
623 strncpy(player->name, player_name, MAX_PLAYER_NAME_LEN);
624 player->name[MAX_PLAYER_NAME_LEN] = '\0';
626 Error(ERR_NETWORK_CLIENT, "client %d calls itself \"%s\"",
627 player_nr, player->name);
630 static void Handle_OP_PLAYER_CONNECTED(void)
632 struct NetworkClientPlayerInfo *player, *last_player = NULL;
633 int new_client_nr = getNetworkBuffer8BitInteger(read_buffer);
634 int new_index_nr = new_client_nr - 1;
636 printf("OP_PLAYER_CONNECTED: %d\n", new_client_nr);
637 Error(ERR_NETWORK_CLIENT, "new client %d connected", new_client_nr);
639 for (player = &first_player; player; player = player->next)
641 if (player->nr == new_client_nr)
642 Error(ERR_EXIT, "multiplayer server sent duplicate player id");
644 last_player = player;
647 last_player->next = player =
648 checked_malloc(sizeof(struct NetworkClientPlayerInfo));
649 player->nr = new_client_nr;
650 player->name[0] = '\0';
653 stored_player[new_index_nr].connected_network = TRUE;
656 static void Handle_OP_PLAYER_DISCONNECTED(void)
658 struct NetworkClientPlayerInfo *player, *player_disconnected;
659 int player_nr = getNetworkBuffer8BitInteger(read_buffer);
660 int index_nr = player_nr - 1;
662 printf("OP_PLAYER_DISCONNECTED: %d\n", player_nr);
663 player_disconnected = getNetworkPlayer(player_nr);
664 Error(ERR_NETWORK_CLIENT, "client %d (%s) disconnected",
665 player_nr, getNetworkPlayerName(player_nr));
667 for (player = &first_player; player; player = player->next)
668 if (player->next == player_disconnected)
669 player->next = player_disconnected->next;
670 free(player_disconnected);
672 stored_player[index_nr].connected_locally = FALSE;
673 stored_player[index_nr].connected_network = FALSE;
675 if (game_status == GAME_MODE_PLAYING)
679 sprintf(message, "Player %d left network server! Network game stopped!",
682 Request(message, REQ_CONFIRM | REQ_STAY_CLOSED);
684 SetGameStatus(GAME_MODE_MAIN);
688 else if (game_status == GAME_MODE_MAIN)
690 DrawNetworkPlayers();
694 static void Handle_OP_START_PLAYING(void)
696 int player_nr = getNetworkBuffer8BitInteger(read_buffer);
697 char *new_leveldir_identifier = getNetworkBufferString(read_buffer);
698 int new_level_nr = getNetworkBuffer16BitInteger(read_buffer);
699 unsigned int new_random_seed = getNetworkBuffer32BitInteger(read_buffer);
701 if (!strEqual(new_leveldir_identifier, network_level.leveldir_identifier))
703 Error(ERR_WARN, "no such level identifier: '%s'", new_leveldir_identifier);
705 stop_network_game = TRUE;
710 printf("OP_START_PLAYING: %d\n", player_nr);
711 Error(ERR_NETWORK_CLIENT,
712 "client %d starts game [level %d from level identifier '%s']\n",
713 player_nr, new_level_nr, new_leveldir_identifier);
715 LevelDirTree *new_leveldir =
716 getTreeInfoFromIdentifier(leveldir_first, new_leveldir_identifier);
718 if (new_leveldir != NULL)
720 leveldir_current = new_leveldir;
721 level_nr = new_level_nr;
724 /* needed if level set of network game changed graphics, sounds or music */
725 ReloadCustomArtwork(0);
729 if (network_level.use_network_level_files)
730 LoadNetworkLevel(&network_level);
734 StartGameActions(FALSE, setup.autorecord, new_random_seed);
737 static void Handle_OP_PAUSE_PLAYING(void)
739 int player_nr = getNetworkBuffer8BitInteger(read_buffer);
741 printf("OP_PAUSE_PLAYING: %d\n", player_nr);
742 Error(ERR_NETWORK_CLIENT, "client %d pauses game", player_nr);
744 if (game_status == GAME_MODE_PLAYING)
747 DrawVideoDisplay(VIDEO_STATE_PAUSE_ON, 0);
751 static void Handle_OP_CONTINUE_PLAYING(void)
753 int player_nr = getNetworkBuffer8BitInteger(read_buffer);
755 printf("OP_CONTINUE_PLAYING: %d\n", player_nr);
756 Error(ERR_NETWORK_CLIENT, "client %d continues game", player_nr);
758 if (game_status == GAME_MODE_PLAYING)
760 tape.pausing = FALSE;
761 DrawVideoDisplay(VIDEO_STATE_PAUSE_OFF, 0);
765 static void Handle_OP_STOP_PLAYING(void)
767 int client_nr = getNetworkBuffer8BitInteger(read_buffer);
768 int cause_for_stopping = getNetworkBuffer8BitInteger(read_buffer);
770 printf("OP_STOP_PLAYING: %d [%d]\n", client_nr, cause_for_stopping);
771 Error(ERR_NETWORK_CLIENT, "client %d stops game [%d]",
772 client_nr, cause_for_stopping);
774 if (game_status == GAME_MODE_PLAYING)
776 int index_nr = client_nr - 1;
777 struct PlayerInfo *client_player = &stored_player[index_nr];
778 boolean stopped_by_remote_player = (!client_player->connected_locally);
781 if (cause_for_stopping == NETWORK_STOP_BY_PLAYER)
782 sprintf(message, "Network game stopped by player %d!", client_nr);
784 sprintf(message, (cause_for_stopping == NETWORK_STOP_BY_ERROR ?
785 "Network game stopped due to internal error!" :
786 "Network game stopped!"));
788 if (cause_for_stopping != NETWORK_STOP_BY_PLAYER ||
789 stopped_by_remote_player)
790 Request(message, REQ_CONFIRM | REQ_STAY_CLOSED);
792 SetGameStatus(GAME_MODE_MAIN);
798 static void Handle_OP_MOVE_PLAYER(void)
800 int player_nr = getNetworkBuffer8BitInteger(read_buffer);
801 int server_frame_counter = getNetworkBuffer32BitInteger(read_buffer);
804 if (!network_playing)
807 if (server_frame_counter != FrameCounter)
809 Error(ERR_INFO, "frame counters of client %d and server out of sync",
811 Error(ERR_INFO, "frame counter of client is %d", FrameCounter);
812 Error(ERR_INFO, "frame counter of server is %d", server_frame_counter);
813 Error(ERR_INFO, "this should not happen -- please debug");
815 stop_network_game = TRUE;
820 /* copy valid player actions (will be set to 0 for not connected players) */
821 for (i = 0; i < MAX_PLAYERS; i++)
822 stored_player[i].effective_action =
823 getNetworkBuffer8BitInteger(read_buffer);
825 network_player_action_received = TRUE;
828 static void Handle_OP_BROADCAST_MESSAGE(void)
830 int player_nr = getNetworkBuffer8BitInteger(read_buffer);
832 printf("OP_BROADCAST_MESSAGE: %d\n", player_nr);
833 Error(ERR_NETWORK_CLIENT, "client %d sends message", player_nr);
836 static void Handle_OP_LEVEL_FILE(void)
838 int player_nr = getNetworkBuffer8BitInteger(read_buffer);
839 char *leveldir_identifier;
840 char *network_level_dir;
841 struct LevelFileInfo *file_info = &network_level.file_info;
842 struct LevelFileInfo *tmpl_info = &network_level.tmpl_info;
843 boolean use_custom_template;
845 setString(&network_level.leveldir_identifier, NULL);
846 setString(&network_level.file_info.basename, NULL);
847 setString(&network_level.file_info.filename, NULL);
848 setString(&network_level.tmpl_info.basename, NULL);
849 setString(&network_level.tmpl_info.filename, NULL);
851 printf("OP_LEVEL_FILE: %d\n", player_nr);
853 leveldir_identifier = getStringCopy(getNetworkBufferString(read_buffer));
855 if (hasPathSeparator(leveldir_identifier))
856 Error(ERR_EXIT, "protocol error: invalid filename from network client");
858 InitNetworkLevelDirectory(leveldir_identifier);
860 network_level_dir = getNetworkLevelDir(leveldir_identifier);
862 file_info->nr = getNetworkBuffer16BitInteger(read_buffer);
863 file_info->type = getNetworkBuffer8BitInteger(read_buffer);
864 file_info->packed = getNetworkBuffer8BitInteger(read_buffer);
865 file_info->basename = getStringCopy(getNetworkBufferString(read_buffer));
866 file_info->filename = getPath2(network_level_dir, file_info->basename);
868 if (hasPathSeparator(file_info->basename))
869 Error(ERR_EXIT, "protocol error: invalid filename from network client");
871 getNetworkBufferFile(read_buffer, file_info->filename);
873 use_custom_template = getNetworkBuffer8BitInteger(read_buffer);
874 if (use_custom_template)
876 *tmpl_info = *file_info;
878 tmpl_info->basename = getStringCopy(getNetworkBufferString(read_buffer));
879 tmpl_info->filename = getPath2(network_level_dir, tmpl_info->basename);
881 if (hasPathSeparator(tmpl_info->basename))
882 Error(ERR_EXIT, "protocol error: invalid filename from network client");
884 getNetworkBufferFile(read_buffer, tmpl_info->filename);
887 network_level.leveldir_identifier = leveldir_identifier;
888 network_level.use_custom_template = use_custom_template;
890 /* the receiving client(s) use(s) the transferred network level files */
891 network_level.use_network_level_files = TRUE;
894 printf("::: '%s'\n", leveldir_identifier);
895 printf("::: '%d'\n", file_info->nr);
896 printf("::: '%d'\n", file_info->type);
897 printf("::: '%d'\n", file_info->packed);
898 printf("::: '%s'\n", file_info->basename);
899 printf("::: '%s'\n", file_info->filename);
901 if (use_custom_template)
902 printf("::: '%s'\n", tmpl_info->filename);
906 static void HandleNetworkingMessage(void)
908 stop_network_game = FALSE;
910 initNetworkBufferForReading(read_buffer);
912 int message_type = getNetworkBuffer8BitInteger(read_buffer);
914 switch (message_type)
916 case OP_BAD_PROTOCOL_VERSION:
917 Handle_OP_BAD_PROTOCOL_VERSION();
921 Handle_OP_YOUR_NUMBER();
924 case OP_NUMBER_WANTED:
925 Handle_OP_NUMBER_WANTED();
929 Handle_OP_PLAYER_NAME();
932 case OP_PLAYER_CONNECTED:
933 Handle_OP_PLAYER_CONNECTED();
936 case OP_PLAYER_DISCONNECTED:
937 Handle_OP_PLAYER_DISCONNECTED();
940 case OP_START_PLAYING:
941 Handle_OP_START_PLAYING();
944 case OP_PAUSE_PLAYING:
945 Handle_OP_PAUSE_PLAYING();
948 case OP_CONTINUE_PLAYING:
949 Handle_OP_CONTINUE_PLAYING();
952 case OP_STOP_PLAYING:
953 Handle_OP_STOP_PLAYING();
957 Handle_OP_MOVE_PLAYER();
960 case OP_BROADCAST_MESSAGE:
961 Handle_OP_BROADCAST_MESSAGE();
965 Handle_OP_LEVEL_FILE();
970 Error(ERR_NETWORK_CLIENT,
971 "unknown opcode %d from server", message_type);
976 /* in case of internal error, stop network game */
977 if (stop_network_game)
978 SendToServer_StopPlaying(NETWORK_STOP_BY_ERROR);
981 static char *HandleNetworkingPackets(void)
985 /* ---------- check network server for activity ---------- */
987 int num_active_sockets = SDLNet_CheckSockets(rfds, 0);
989 if (num_active_sockets < 0)
990 return "Error checking network sockets!";
992 if (num_active_sockets == 0)
993 break; // no active sockets, stop here
995 /* ---------- read packets from network server ---------- */
997 initNetworkBufferForReceiving(read_buffer);
999 int num_bytes = receiveNetworkBufferPacket(read_buffer, sfd);
1002 return "Error reading from network server!";
1005 return "Connection to network server lost!";
1007 HandleNetworkingMessage();
1009 if (stop_network_client)
1010 return stop_network_client_message;
1016 static void FreeNetworkClientPlayerInfo(struct NetworkClientPlayerInfo *player)
1022 FreeNetworkClientPlayerInfo(player->next);
1024 checked_free(player);
1027 static void HandleNetworkingDisconnect(void)
1031 SDLNet_TCP_DelSocket(rfds, sfd);
1032 SDLNet_TCP_Close(sfd);
1034 network_playing = FALSE;
1036 network.enabled = FALSE;
1037 network.connected = FALSE;
1039 setup.network_mode = FALSE;
1041 for (i = 0; i < MAX_PLAYERS; i++)
1042 stored_player[i].connected_network = FALSE;
1044 FreeNetworkClientPlayerInfo(first_player.next);
1046 first_player.nr = 0;
1047 first_player.next = NULL;
1050 void HandleNetworking(void)
1052 char *error_message = HandleNetworkingPackets();
1054 if (error_message != NULL)
1056 HandleNetworkingDisconnect();
1058 if (game_status == GAME_MODE_PLAYING)
1060 Request(error_message, REQ_CONFIRM | REQ_STAY_CLOSED);
1062 SetGameStatus(GAME_MODE_MAIN);
1068 Request(error_message, REQ_CONFIRM);
1070 if (game_status == GAME_MODE_MAIN)
1071 ClearNetworkPlayers();
1076 void DisconnectFromNetworkServer(void)
1078 DrawNetworkText_Title("Terminating Network");
1079 DrawNetworkText("Disconnecting from network server ...");
1081 HandleNetworkingDisconnect();
1083 DrawNetworkText_Success("Successfully disconnected!");